Quarterly report pursuant to Section 13 or 15(d)

Variable Interest Entities (Early adoption) (Details 2)

Variable Interest Entities (Early adoption) (Details 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Consolidated Balance Sheets [Abstract]      
Other Assets $ 1,927,324us-gaap_OtherAssets   $ 1,807,208us-gaap_OtherAssets
Retained (deficit) earnings (943,525)us-gaap_RetainedEarningsAccumulatedDeficit   (1,052,324)us-gaap_RetainedEarningsAccumulatedDeficit
Consolidated Statements of Income [Abstract]      
Noninterest Income 231,623us-gaap_NoninterestIncome 248,485us-gaap_NoninterestIncome  
Income Tax Expense (Benefit) 54,006us-gaap_IncomeTaxExpenseBenefit 52,097us-gaap_IncomeTaxExpenseBenefit  
Net Income (Loss) Attributable to Parent $ 165,854us-gaap_NetIncomeLoss $ 149,143us-gaap_NetIncomeLoss